195169505 has 4 divisors (see below), whose sum is σ = 234203412. Its totient is φ = 156135600.

The previous prime is 195169493. The next prime is 195169531. The reversal of 195169505 is 505961591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505961591 = 107 ⋅4728613.

It can be written as a sum of positive squares in 2 ways, for example, as 66210769 + 128958736 = 8137^2 + 11356^2 .

It is not a de Polignac number, because 195169505 - 2⁴ = 195169489 is a prime.

It is a super-2 number, since 2×195169505² = 76182271363890050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19516946 + ... + 19516955.

It is an arithmetic number, because the mean of its divisors is an integer number (58550853).

Almost surely, 2^195169505 is an apocalyptic number.

It is an amenable number.

195169505 is a deficient number, since it is larger than the sum of its proper divisors (39033907).

195169505 is an equidigital number, since it uses as much as digits as its factorization.

195169505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39033906.

The product of its (nonzero) digits is 60750, while the sum is 41.

The square root of 195169505 is about 13970.3079779939. The cubic root of 195169505 is about 580.0569751798.

The spelling of 195169505 in words is "one hundred ninety-five million, one hundred sixty-nine thousand, five hundred five".